Snowplow



Mar. 13, 1923. I 1,448,667 E. LEVY S NOWPLOW Filed May 1o, i921 5 sheets-sheet 2 A TTRNEYS Patented Mar. 13, 1923.

UNITED STATES EDWARD LEvY,oF MUNIsiNG, MICHIGAN.

SNOWPLOW.

Application filed May 10,

T o all whom it may coowem Be it known that I, EDWARD LEVY, a citizen of the United States, and a resident of Munising, in the county of Alger-and State of Michigan, have invented a new and Improved Snowplow, of which the following is a description.

My invention relates to snow plows and particularlyto a snow plow adapted to be vdrawn or pushed by a tractor.

The general object of the invention is to provide a plow of the indicated character improved in various particulars whereby a track'will be plowed ahead of sleighs with which the apparatus is equipped, so that the machine will follow the plowed track. Provision is also made for steering the plow .by hand to` work independently of the tractive power that the plow may be kept in the center of the road regardless of the angleof travel. The snow plow is so arranged thata lsingle operator can control the same with respect to raising or lowering a nose plow with which the plow is equipped aswell as with regard to controlling either the front or back sleigh for steering, as well as option. ally raising or lowering mold boards provided at the sides of the apparatus inthe rear of the nose plow.

Other important features and advantages of the apparatus will clearly appear asthe description proceeds.

Reference is to be ing drawings forming a part of this specification, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a side elevation of a snow plow embodying my invention;

Figure 2 is a central longitudinal vertical section; f

Figure 3 is a plan view;

Figure 4: is a cross section on the line 4.-4, Figure 3;

Figure 5 is a cross section on the line 55, Figure 2;

Figure 6 is an enlarged longitudinal vertical section of the rear portion of the snow Plow;

Figure 7 is a detail in horizontal section through one of the side mold boards and its vertical guides;

Figure 8 is a side eleva-tion o-f one of the sleighs;

Figure 9 is an enlarged'cross section of one the main frame.

had tothe accompany i921.r serial No. 468,333.

of the runners and an anti-sluing device provided thereon.

In carrying out my invention in accordance with the illustrated example, a suitable main frame 10 is provided, having longitudinal side bars. Said frame is supported on a front sleigh 11 and a rear sleigh 12. A nose plow 13 is provided at the'front of the apparatus and therefore forward of the front sleigh 11. On the apparatus at the sides outside of the side main frame 10 are mold boards 14.

In the rear of the mold boards 14 are secured wings 15 swingable about vertical hinges 16 securing said wings at the front portion of an auxiliary frame 17 rigid with rlhe wings 15 are adapted to be folded at the sides of the machine or to be swung outwardly in rearwardly flaring form. To hold the wings spread I provide swingable braces 18 secured at one end to the frame 17 by rvertical hinges 19, the

outer ends of said braces being adapted to engage against vertical cleats 20 on 'the wings 15 at the inner side or equivalent members presenting shoulders for -the outer4 ends of said braces. On each wing 15 at the outer side is a iixed snow elevator 2l advantageouslyV-shaped in cross section and in any event constituting a deiiector presenting 'a front transversely curved surface, the elevator inclining rearwardly from the lower edge of the wing to a point at the top near the rear edge of the wing. Similar deflectors 22 are also provided on the wings at the rear edges of the outside.v`

The front sleigh 11 turns about a vertical king bolt 23 passing through a cross bar 24 on the mainframe and through a top cross bar 25-on the sleigh and joining the runners thereof. Similarly, the rear sleigh 12 has a king bolt 23a passing through a cross bar 24 on the main frame and a cross'bar 2,5a 'on the sleigh 12. For steering the front sleigh by causing the same toturn about `its king bolty 23, I provide steering cables 26, or equivalent chains or the like secured at their outer ends to rearwardly extending arms 27 on the sleigh runners at the rear end or equivalent fittings for securing said cables. kThe cables 26 or equivalent ieXible elementsex tend from the sides of the sleigh laterally outward in opposite directions and over sheaves 28, from which said cables run laterally inward to a drum 29 about which the cables re- 5o A way.

versely wind, rlhe shaft of the drum 29 turnsin suitable bearings 31 and on said shaft is a worm wheel 32 meshing with which is a worm 33 on Aa vertical vshaft 34 rising above sleigh at the front and secured thereto is a forwardly extending arm 37 on a vertical shaft 38' extending in the iiiain cross bar 382l of themain traine 10, said shaft having at its upper end an arm 39 extending laterally outward and having connected therewith the rear end .of a connecting rod 40 which ei;- teiids 'forwardly along the adjacent side of the frame 10 to a connection with a hand lever 41 iulcrumed on the iframe 10 at a v. point laterally outward from the handwlieel 35. rlhus7 by throwingtlie lever 41 the shaft 38l will be turned to swing the arm 37 thereof to the right or yleft and exert a pull in one direction or the other on the ycable or chain 36 to give the sleigh 12 a` turning movement about its king bolt 23a.

. Vl provide on the runneroi" each sleigh 11 andl l2 at the outside thereof, a longitudinal antifsluing plate 42 pivoted to the adjacent runner at its front end as at 43. rlhe rear end of each plate is adjustably suspended bya vertical stud bolt 44 passing atits upper end lthrough a bracket 45 on the runner and provided with set nuts 46 above and below said bracket. Similarly, the lower end of the stud bolt 44 extends through a bracket 47 and is provided with upper and lower set nuts 43 above and below said bracket. On the said runner'also at the outer side are guard keepers 49 odset at their outer ends.-

to overlap the plate 42. By adjusting the bolts 44 the lower ends of the plates 42 may r be caused to extend below the sleigh runners to any desired extent to prevent sluing of the sleighs. Said plates in practice are sharpened to cut into any ice in the road- For raising or lowering the nose plow 13 it is secured to cross bars extending between longitudinal channel bars 50. Said bars 50 are secured at their rear ends by transverse pivot bolts 51 that theyY may rock vertically .and at their forward ends they are rigidlyl fastened as atl 52 to the plow l13 that the latter may s wing vertically with the raising and lowering of the bars 50.

'.The front end of the main iframe 1() is curved, the curvature being struck with the lpivots 51 as a center and the rear edge ot tlieplow frame 13a is similarly curved. At the curved joint between the plow frame 13a and main frame 10 are secured offset plates 54. The illustrated raising and lowering means consists of a cable 55 secured at its iorward end ot the cross bar 50u and runniiig upwardly over a. sheave 56 and then rearwardly along the trame 10 to a connection with a hand lever l57 secured to one of .the side vbars of the main frame, advantageously, at the opposite side of the 'trame from the lever 41, said levers being in yadjacent transverse` planes to be conveniently operated 'from one point. n

In order to raise or lower the side mold boards 14, fl provide on the same a vertical plate 53 and beariiijy 59, said plate having a brace 60. rlfhe plate 58 has vertical guided movement on a plate 61 on the ltraine 10. A vertical sha-tt 62 has threaded engagement with the' bearing 59` and provided at its upperendwith a. handwheel 63 or equivalent operating means. The arrangement is such that the turning ot the shaft 62 inv one or other direction y,will raise or lower bearing 59 and impart vertical movement to the plate 53y thereby raising or lowering ,the

- mold board 14.

For the hauling of theplow. l provide draw rods64, the rear ends of said bars belingy swingably secured. as at ,65to a transverse draft4 bar 66 on the main rainelO. The liront ends ofthe cross bars 64have eyes 67 orother means for .hitching the saine to a tractor. At the rear-for pushing the apparatus by a tractor any suitable rear hitch v (not shown) may be provided.

ln the lowered position ot the nose plow 13 thevbars 50 may vrest,upoirbrackets; 68 provided on the main frame at, the front end. lVith the., above described i arrangement, the nose'plow which is of thek V-type will direct the snow laterallyfto the .outer sides of the machine and the `snow ywill be `iurtlier deflected by the side moldv boards 14, the `wings finally further 'displacing the jsnow laterally, the upward `inclination of the rigid elevators contributing to the clearing ot' the road lwith .the minimum power. lt will be observed that the front sleighv 11 is positioned between the nose plow 13 and the side ,mold boards 14 while the rear plow 12 is positioned rearward ot the side mold boards between the saine. and the swingable wings 15. rlhe arrangement provides the maximum stability Vyand an effective steering control.

i-i characteristic ot the described. snow plow is that the operator can kcontrol the same to keep on the outside ot curvesor the center-soii the road, a matter diiliculti not impossible with the lordinaryy type of plow. v

l would state inconclusionthat. while the illustrated example constitutes a practical yembodiment. oct my invention, I do not limit" myself strictly to the mechanical details herein illustrated, since manifestly the same can be considerably varied without depar. ture from the spirit of the invention as defined in the appended claims.

Having thus described my invention, I claim-z 1. Inv a snow plow, a frame7 a nose plow on the frame at the front adapted to direct snow to both sides of the frame, flexible means to raise and lower said plow, mold boards on the frame at the outer sides rearward of the nose plow, means to vertically adjust the mold boards, a front sleigh suppo-rting said frame in the rear'of the nose f plow, and a second sleigh supporting said frame rearward of the first sleigh.V

2. In a snow plow of the class described, a frame, bars pivoted to the frame adjacent to the Jfront end and extending beyond said front end, a nose plow rigid with said hars in front of the frame, means to swing said bars on their pivots for raising or lowering the plow, and a sleigh in the rear of the nose plow.

3. In a snow plow of the class described,

a frame, bars pivoted to the frame adjacent to the front end and extending beyond said front end, a nose plow rigid with said bars in front of the frame, a sleigh in the rear of said nose plow for supporting said frame, and flexible means to swing said bars on their pivots for raising or loweringk the plow, said frame at the 'front and said plow at the rear presenting curves struck approximately from the pivotal center of said bars.

4:. In a snowplow of the class described, a frame, bars pivoted to the frame adjacent to the front end and extending beyond said front end, a nose plow rigid with said bars in front of the frame, and flexible means to swing said bars on their pivots for raising or lowering the plow, said frame at the front and said plow at the rear presenting curves struck approximately from the pivotal center of said bars; together with curved plates on said curved portions at the outer sides of the joints.

EDWARD LEVY. 

